To study the effects of smoking on sense of smell, a researcher would most likely conduct a:

it B ok hmm

Explanation:

oh A research study conducted by the Mayo Clinic would present the most bias-free information. Information in a formal study would be based on results from individuals who were part of the study.

UwU

c is the answer for this

this is a pretty broad question and can be a pretty lengthy answer. since 1900, women have gained a lot more rights and have become active in the workforce. with women being in the workforce, men play a larger role in family life. many family tasks are shared between men and women, whereas, women used to be the sole family caretakers.

that should get you started at least.